Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, ... more

The Big O - Marine Cultural Space, a giant circular strucure with lasers and a light show during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

The Big O - Marine Cultural Space, a giant circular strucure with lasers and a light show during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 ... more

The Big-O, a giant circular structure for nightly laser and light shows, is seen lit up during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

The Big-O, a giant circular structure for nightly laser and light shows, is seen lit up during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After ... more

The Big O - Marine Cultural Space, a giant circular strucure with lasers and a light show during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

The Big O - Marine Cultural Space, a giant circular strucure with lasers and a light show during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 ... more

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: ... more

Photo: Ahn Young-joon, Associated Press

Fireworks light the sky during a ceremony on the eve of the Expo... Photo-2923967.42813 - Houston Chronicle

Image 7 of 34

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, ... more

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, ... more

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: ... more

Photo: Ahn Young-joon, Associated Press

Fireworks light the sky during a ceremony on the eve of the Expo... Photo-2923916.42813 - Houston Chronicle

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Taboola Gallery Frame Item-85307.42813 - Houston Chronicle

Image 11 of 34

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to ... more

Photo: Chung Sung-Jun, Getty Images

Fireworks light the sky for the opening ceremony of the 2012 Yeosu... Photo-2923948.42813 - Houston Chronicle

Image 12 of 34

Flag bearers hold national flags during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

Flag bearers hold national flags during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are ... more

South Koreans perform during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

South Koreans perform during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to ... more

Photo: Chung Sung-Jun, Getty Images

South Koreans perform during the opening ceremony of the 2012 Yeosu... Photo-2923951.42813 - Houston Chronicle

Image 14 of 34

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to ... more

Photo: Chung Sung-Jun, Getty Images

Fireworks light the sky for the opening ceremony of the 2012 Yeosu... Photo-2923947.42813 - Houston Chronicle

Image 15 of 34

Taboola Gallery Frame Item-85307.42813 - Houston Chronicle

Image 16 of 34

Flag-bearers carry national flags during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

Flag-bearers carry national flags during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean ... more

Photo: Ahn Young-joon, Associated Press

Flag-bearers carry national flags during a ceremony on the eve of... Photo-2923966.42813 - Houston Chronicle

Image 17 of 34

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

Fireworks light the sky during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: ... more

Photo: Ahn Young-joon, Associated Press

Fireworks light the sky during a ceremony on the eve of the Expo... Photo-2923965.42813 - Houston Chronicle

Image 18 of 34

The Big-O, a giant circular structure for nightly laser and light shows, is seen lit up during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

The Big-O, a giant circular structure for nightly laser and light shows, is seen lit up during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After ... more

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

Fireworks light up over the Big-O, a giant circular structure for nightly laser and light shows, during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, ... more

South Korean women march with flags of participating nations at the Expo 2012 during the opening ceremony in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

South Korean women march with flags of participating nations at the Expo 2012 during the opening ceremony in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 ... more

Photo: JUNG YEON-JE, AFP/Getty Images

South Korean women march with flags of participating nations at the... Photo-2923959.42813 - Houston Chronicle

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South Korean President Lee Myung-Bak (R) speaks as Kang Dong-Suk (2nd L), chief organiser of Expo 2012 Yeosu, and Vincente Loscertales (3rd L), secretary genearl of the Bureau of International Exhibition (BIE), look on during the opening ceremony of the Expo 2012 in Yeosu, a small city on South Korea's south coast, on May 11, 2012. After four years of work and 10 billion USD in investment, an international expo will start on May 12 at a glittering hi-tech venue on the site of a former dusty cement terminal in South Korea under the theme of "The Living Ocean and Coast". AFP PHOTO / JUNG YEON-JEJUNG YEON-JE/AFP/GettyImages less

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

Fireworks light the sky for the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to ... more

Photo: Chung Sung-Jun, Getty Images

Fireworks light the sky for the opening ceremony of the 2012 Yeosu... Photo-2923955.42813 - Houston Chronicle

Image 24 of 34

South Korean President Lee Myung-Bak and his wife Kim Yoon-Ok attend at the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

South Korean President Lee Myung-Bak and his wife Kim Yoon-Ok attend at the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations ... more

Flag bearers hold national flags during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are expected to participate in the expo that will open to the public on May 12 to August 12. less

Flag bearers hold national flags during the opening ceremony of the 2012 Yeosu Expo on May 11, 2012 in Yeosu, South Korea. More than 105 countries, 10 International Organizations and 10 million visitors are ... more

Flag-bearers hold national flags during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

Flag-bearers hold national flags during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and ... more

Photo: Ahn Young-joon, Associated Press

Flag-bearers hold national flags during a ceremony on the eve of... Photo-2923945.42813 - Houston Chronicle

Image 28 of 34

South Korean singer IU performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

South Korean singer IU performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and ... more

Photo: Ahn Young-joon, Associated Press

South Korean singer IU performs during a ceremony on the eve of the... Photo-2923943.42813 - Houston Chronicle

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South Korean girl group 2NE1 performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

South Korean girl group 2NE1 performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living ... more

Photo: Ahn Young-joon, Associated Press

South Korean girl group 2NE1 performs during a ceremony on the eve... Photo-2923942.42813 - Houston Chronicle

Image 30 of 34

Taboola Gallery Frame Item-85307.42813 - Houston Chronicle

Image 31 of 34

South Korean boy group Big Bang performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

South Korean boy group Big Bang performs during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living ... more

Photo: Ahn Young-joon, Associated Press

South Korean boy group Big Bang performs during a ceremony on the... Photo-2923933.42813 - Houston Chronicle

Image 32 of 34

The Big O, lights in blue, spray water as an attraction during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Ahn Young-joon) less

The Big O, lights in blue, spray water as an attraction during a ceremony on the eve of the Expo 2012 in Yeosu, South Korea, Friday, May 11, 2012. The expo will open for three months on May 12 under the theme ... more

Photo: Ahn Young-joon, Associated Press

The Big O, lights in blue, spray water as an attraction during a... Photo-2923918.42813 - Houston Chronicle

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The Big O, a water screen that is a landmark of the Expo 2012, is seen during a media day of the expo, in Yeosu, South Korea, Wednesday, May 9, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Yonhap) KOREA OUT less

The Big O, a water screen that is a landmark of the Expo 2012, is seen during a media day of the expo, in Yeosu, South Korea, Wednesday, May 9, 2012. The expo will open for three months on May 12 under the ... more

Photo: Associated Press

The Big O, a water screen that is a landmark of the Expo 2012, is... Photo-2923968.42813 - Houston Chronicle